F023 TAv07 EO 07.02

Which of the figures below shows a delta star connected transformer?

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if there was a short to earth between the generator and the load, how would the fault control unit detect the issue?

• the fault control unit would sense a voltage drop over the resistor.

• both inputs to the fault control unit would be high

• both inputs to the fault control unit would be low

• the rise in I₂ current would be detected in the top input to the fault control unit

• the drop in I₁ current would be detected in the bottom input to the fault control unit

Which of the figures below shows a star star connected transformer?

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which of the following circuits shows the correct output?

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 Which of the following equations would you use to calculate % regulation of a transformer?

If the T=0.85 for a transformer, what type of transformer would it be?

• Step up Transformer

• Step down Transformer

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• Unity

If the T=5 for a transformer, what type of transformer would it be?

• Step up Transformer

• Step down Transformer

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• Unity

Which of the following are core losses found in a transformer?

• Copper losses

• Eddy currents

• Flux leakage

• Hysteresis loss

• Capacitive losses